Autofab has been making custom bushings in both urethane and Delrin for many years. We have found that Delrin generally holds up better under the abuse that off roading tends to deliver. We have now, made a kit for the 1980-1996 full size Broncos and F150 4X4 trucks. These bushings will fit the stock type spring eyes on both stock and lift type springs, as long as the spring has the stock size spring eyes. This kit also includes new heavy wall DOM tube inner sleeves. NOTE, these bushings will not fit the F150 2 wheel drive trucks.